On Mon, 2018-01-08 at 00:14 -0500, Zhu Yanjun wrote:
> In xmit, there is a skb_clone. This function copies the struct sk_buff.
> And some parameters are changed to the new skb. Then the new skb is sent
> while the old skb is freed.
>
> While the function skb_clone is removed, the parameter changes are made on
> the old skb, then the old skb is sent. It can also work well.
>
> The following tests are made.
>
> server client
> --------- ---------
> > 1.1.1.1|<----rxe-channel--->|1.1.1.2|
>
> --------- ---------
>
> On server: rping -s -a 1.1.1.1 -v -C 1000 -S 512
> On client: rping -c -a 1.1.1.1 -v -C 1000 -S 512
>
> The kernel config CONFIG_DEBUG_KMEMLEAK is enabled on both server
> and client.
>
> This test runs for several hours. There is no memory leak and the whole
> system can work well.
>
> As the above network, the following tests are made.
>
> Server: ibv_rc_pingpong -d rxe0 -g 1
> Client: ibv_rc_pingpong -d rxe0 -g 1 1.1.1.1
>
> The result on Server.
> Before:
> 8192000 bytes in 0.88 seconds = 74.36 Mbit/sec
> 1000 iters in 0.88 seconds = 881.30 usec/iter
>
> After:
> 8192000 bytes in 0.81 seconds = 81.15 Mbit/sec
> 1000 iters in 0.81 seconds = 807.62 usec/iter
>
> The throughput is enhanced and the latency is reduced.
>
> CC: Srinivas Eeda <srinivas.eeda@xxxxxxxxxx>
> CC: Joe Jin <joe.jin@xxxxxxxxxx>
> CC: Junxiao Bi <junxiao.bi@xxxxxxxxxx>
> Signed-off-by: Zhu Yanjun <yanjun.zhu@xxxxxxxxxx>
Thanks, applied.
--
Doug Ledford <dledford@xxxxxxxxxx>
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